An engineer records the electrical energy transferred and the operating time for two different industrial induction furnaces.
| Furnace | Electrical energy transferred (MJ) | Operating time (minutes) |
|---|---|---|
| Furnace A | 180 | 5.0 |
| Furnace B | 240 | 8.0 |
Compare the average electrical power of the two furnaces, using calculations to support your answer.
31 exam-style questions on Edexcel GCSE Physics 10.3 Electrical energy and power, covering 10.3.1 The heating effect of an electric current, 10.3.2 Reducing energy transfer in wires, 10.3.3 Advantages and disadvantages of the heating effect, 10.3.4 Energy transferred by an electrical circuit, 10.3.5 Electrical power, and 10.3.6 Energy transfers in domestic devices. Each one has a worked solution and a mark scheme showing where the marks go.